Intake & Exhaust now = wasted $$ after FI?
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Intake & Exhaust now = wasted $$ after FI?
Anyone know if I get a new intake eg, REVi, and Exhaust now. will they be made redundant or retired when I get FI, eg RAP AF SC or Hymee Twin Screws?
Or will they enhance the performace of the FI system I choose later.
Or will they enhance the performace of the FI system I choose later.
#3
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Originally Posted by slavearm
The intake will be, but the exhaust will most likely be compatable with just about any system you buy.
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I think there are problems with FI and the high-flow cats and midpipes. Backfiring seems to be the issue but can possibly be eliminated through tuning the A/F.
-MD
-MD
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Originally Posted by G8rboy
Agreed on the intake, but you need to research the exhaust systems- Racing Beat has said theirs is not tuned for a FI application, so you need to find something that is more free flowing (Greddy SP2, B&B, etc).
As a matter of fact i wrote Greddy just a little while ago. They have several different types of exhaust. The SP2 is made for NA cars. The EVOTT is their unit for an NA car with an aftermarket turbo kit. They said no ETA, but they are hoping to get one out around Sept.
For the original question, if you get intake & exhaust, the intake part will have to be taken out, the exhaust part you can still use.
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You shouldn't bother with the rev8 intake or exhaust if you plan on going FI. That's almost a $1000 right there. You should grab the rp super cat midpipe instead.
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Originally Posted by Fanman
Dude, why do you keep on saying this ? What proof do you have that the Greddy SP2 or B&B flow more than the RB ? So far I haven't seen any proof of this. Even if RB has come out & said that their exhaust is tuned for NA application, how do you know that the Greddy & B&B are not ?
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Originally Posted by G8rboy
What do you mean keep on saying it? when I have I said it before? Truth is RB did come out and say it- I'm not knocking them at all. No other company has come out and stated that, so I have to go on the fact that I would avoid RB's exhaust if I planned going FI, that's all.
![Wink](https://www.rx8club.com/images/smilies/wink.gif)
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I think the only reason RB made that comment is that noise was a design consideration for them, and with a turbo, you can worry about that a bit less, so given that they may have been able to make it flow a bit better. Fanman is right though...ALL currently available aftermarket RX-8 exhausts have been designed around a NA application, unless they were just thrown together from off-the-shelf parts, in which case they weren't "tuned" at all.
jds
jds
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Originally Posted by G8rboy
What do you mean keep on saying it? when I have I said it before? Truth is RB did come out and say it- I'm not knocking them at all. No other company has come out and stated that, so I have to go on the fact that I would avoid RB's exhaust if I planned going FI, that's all.
Hopefully, down the line Greddy will be able to test a EVOTT unit for those of us who have the turbo kit. This should be the optimum unit for us, as it is supposed to be designed with the Greddy/aftermarket turbo kit in mind.
#12
Most exhausts for this car are going to be less efficient and just as costly as going custom.
You can get custom 3" from the turbo-back for $1000 ($400 for high flow cat and midpipe, $600 for exhaust) from almost any real performance shop.
You can get custom 3" from the turbo-back for $1000 ($400 for high flow cat and midpipe, $600 for exhaust) from almost any real performance shop.
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cretinx you bring up a good point as you can get your catback made to suit your application. i would love a catback that gained at least 3-4hp, was compatible with a turbo and was quad tip
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